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Harmonic mixer analysis and design
(Stellenbosch : Stellenbosch University, 2002-03)
ENGLISH ABSTRACT: Harmonic mixers are capable of extended frequency operation by mixing with a harmonic of the
LO (local oscillator) signal, eliminating the need for a high frequency, high power LO. Their
output spectra ...
Satellite-based web server
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: There is a large variety of telemetry recervmg software currently available for the
reception of telemetry information from different satellites. Most of the software used in
receiving telemetry data ...
Structure from motion estimation using a nonlinear Kalman filter
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: Structure from Motion is defined as the problem of extracting the 3d motion of a camera
moving through a scene, as well as the 3d structure of the scene, from the image sequence
produced by the camera ...
Investigation of the impact of high frequency transmitted speech on speaker recognition
(Stellenbosch : Stellenbosch University, 2002-04)
ENGLISH ABSTRACT: Speaker recognition systems have evolved to a point where near perfect performance can be
obtained under ideal conditions, even if the system must distinguish between a large number
of speakers. Under ...
Establishing a process for the fabrication of high-quality HTc SQUIDs
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: High-temperature (HTc) SQUID magnetometers are used in the biomedical field of magnetocardiography
(MCG). The use of MCG enables a much earlier diagnosis of potentially dangerous
conditions than the ...
Attitude sensor and actuator interfacing for micro-satellites
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: The purpose of this thesis was to design and test the interfaces of sensors and actuators. In the
complete Attitude Determination and Control System CADCS) the Interface Control Processor
(ICP) must ...
Power system stabilizer and controlled series capacitor small-signal stability performance analysis
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: This thesis presents results of a study on the small-signal stability of a single-machine
infinite-bus power system. Conditions of generator loading and network impedance are
identified that require ...
Modelling and industrial application of flow through two-dimensional porous media
(Stellenbosch : Stellenbosch University, 2002-03)
ENGLISH ABSTRACT: A Representative Unit Cell (RUC) model for flow through two-dimensional porous media is
presented and applied to two industrial related problems. The first application is to that of
cross-flow in tube ...
Modelling of layered cylindrical dielectric resonators with reference to whispering gallery mode resonators
(Stellenbosch : Stellenbosch University, 2002-12)
ENGLISH ABSTRACT: Keywords: Dielectric Resonators, Radial Mode Matching, Whispering Gallery Modes
The aim of this investigation was to develop accurate modelling techniques to determine the resonant
frequencies of ...
Phonene-based topic spotting on the switchboard corpus
(Stellenbosch : Stellenbosch University, 2002-04)
ENGLISH ABSTRACT: The field of topic spotting in conversational speech deals with the problem of identifying
"interesting" conversations or speech extracts contained within large volumes of speech
data. Typical applications ...